CN103195616B - A kind of fuel steam check valve - Google Patents
A kind of fuel steam check valve Download PDFInfo
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- CN103195616B CN103195616B CN201310145697.7A CN201310145697A CN103195616B CN 103195616 B CN103195616 B CN 103195616B CN 201310145697 A CN201310145697 A CN 201310145697A CN 103195616 B CN103195616 B CN 103195616B
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Abstract
The invention discloses a kind of fuel steam check valve, comprising: upper shell (21), lower shell body (22) and sealing valve block (23); When fuel-steam enters the first center hole (31) and passes through first row vent hole (32), fuel-steam makes sealing valve block (23) contact with the bottom of lower shell body (22), and fuel-steam is discharged by second row vent hole (42) and the second center hole (41); When fuel-steam enters the second center hole (41) and passes through second row vent hole (42), fuel-steam makes sealing valve block (23) contact with the bottom of upper shell (21), and first row vent hole (32) is closed in sealing valve block (23).Fuel steam check valve of the present invention, the unidirectional conveying of fuel-steam can be made and resistance fuel-steam backflow processed, and there is the good process connecting fast and dismantle, while raising fuel economy, avoid more multiple fuel discharge of steam to air, to play the effect of environmental protection.
Description
Technical field
The present invention relates to automobile technical field, particularly relate to a kind of fuel steam check valve.
Background technique
At present, automobile is all equipped with fuel steam discharge control system EVAP, fairly simple fuel evaporation control system common at present as shown in Figure 1, primarily of compositions such as fuel tank 4, charcoal canister 6, Valve EGR 2 and various automobile pipeline assemblies (desorption pipe), system also comprises: EVAP flow transducer 1, oil/gas seperating vale 4, tank pressure sensing device 5.Charcoal canister 6 arranges air spiracle 3.Fuel evaporation control system (EVAP) can store the fuel vapor (HC) that oil-fired system produces; fuel vapor is stoped to be leaked in air; the fuel vapor of collection is in time sent into intake manifold simultaneously; enter engine combustion after mixing with normal mixed gas, fuel oil is fully used.
Usually, desorption pipe assembly plays the effect connecting canister and motor connection.A kind of fuel steam check valve is on the engine installed, its the other end is connected with desorption pipe by quick inserting joint, fuel steam check valve ensures fuel-steam flow direction engine and Thorough combustion, stop fuel-steam backflow, effective guarantee and supplementary function is played to fuel steam discharge control system EVAP.
At present, fuel steam check valve in EVAP system mostly is desorption solenoid electric valve, or realize flowing to and flow control fuel-steam by being integrated in control valve assembly in canister, but desorption pipe is back to in-engine fuel-steam there is no good control effects.Also have in some systems and adopt the control valve that can directly be connected with canister to realize the effect of lead to fuel-steam, but be used for flow control due to control valve, do not have the reverse effect sealed.Therefore, need a kind of novel fuel steam check valve, be connected directly between on motor, and connect canister, guiding and traffic requirement can be met, ensure oppositely to seal fuel-steam simultaneously.
Summary of the invention
In view of this, the technical problem that the present invention will solve is to provide a kind of fuel steam check valve, can make the unidirectional conveying of fuel-steam and resistance fuel-steam backflow processed.
A kind of fuel steam check valve, comprising: upper shell 21, lower shell body 22 and sealing valve block 23; The bottom of described upper shell 21 is fixedly connected with the top of described lower shell body 22, and forms cavity 25 between described upper shell 21 and described lower shell body 22; First center hole 31 is set on the top of described upper shell 21, the first row vent hole 32 communicated is set in the bottom of described upper shell 21, and locating column 33 is set in the bottom of described upper shell 21 with described first center hole 31; Second center hole 41 is set in the bottom of described lower shell body 22, the second row vent hole 42 communicated is set on the top of described lower shell body 22, and the positioning hole 43 matched with described locating column 33 is set on the top of described lower shell body 22 with described second center hole 41; Described sealing valve block 23 is arranged in described cavity 25, and arranges central through bore on described sealing valve block 23; Described central through bore is enclosed within described locating column 33, and with described locating column 33 Spielpassung; Wherein, when fuel-steam enter described first center hole 31 and by described first row vent hole 32 time, fuel-steam makes described sealing valve block 23 contact with the bottom of described lower shell body 22, and fuel-steam is discharged by described second row vent hole 42 and described second center hole 41; When fuel-steam enter described second center hole 41 and by described second row vent hole 42 time, fuel-steam makes described sealing valve block 23 contact with the bottom of described upper shell 21, and described sealing valve block 23 closes described first row vent hole 32.
According to one embodiment of present invention, further, seal ring 24 is also comprised; At the excircle of described lower shell body 22, groove 45 is set; Described seal ring 24 is arranged in described groove 45.
According to one embodiment of present invention, further, 5 first row vent holes 32 are set in the bottom of described upper shell 21, and described 5 first row vent holes 32 all communicate with described first center hole 31.
According to one embodiment of present invention, further, 3 second row vent holes 42 are set on the top of described lower shell body 22, and described 3 second row vent holes 42 all communicate with described second center hole 41.
According to one embodiment of present invention, further, the material of described upper shell 21 and described lower shell body 22 is all plastics.
According to one embodiment of present invention, further, the mode that the bottom of described upper shell 21 is fixedly connected with the top of described lower shell body 22 comprises: ultra-sonic welded.
According to one embodiment of present invention, further, the material of described sealing valve block 23 and described seal ring 24 is all fluorine silica gel.
According to one embodiment of present invention, further, outside thread is set at the excircle of described lower shell body 22 bottom.
Fuel steam check valve of the present invention, the unidirectional conveying of fuel-steam can be made and resistance fuel-steam backflow processed, and there is the good process connecting fast and dismantle, while raising fuel economy, avoid more multiple fuel discharge of steam to air, to play the effect of environmental protection.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of EVAP system of the prior art;
Fig. 2 A to 2E is the schematic diagram of an embodiment according to fuel steam check valve of the present invention;
Wherein, Fig. 2 A is the schematic diagram of fuel steam check valve, Fig. 2 B is the plan view of the upper shell of fuel steam check valve, Fig. 2 C is the worm's eye view of the upper shell of fuel steam check valve, Fig. 2 D is the plan view of the lower shell body of fuel steam check valve, and Fig. 2 E is the plan view of the lower shell body of fuel steam check valve.
Embodiment
With reference to the accompanying drawings the present invention is described more fully, exemplary embodiment of the present invention is wherein described.Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.Below in conjunction with figure and embodiment, many-sided description is carried out to technological scheme of the present invention.
Fig. 2 A to 2E is the schematic diagram of an embodiment according to fuel steam check valve of the present invention.As shown in the figure: fuel steam check valve, also can be called fuel-steam vacuum check valve, comprise: upper shell 21, lower shell body 22 and sealing valve block 23.
The bottom of upper shell 21 is fixedly connected with the top of lower shell body 22, and forms cavity 25 between upper shell 21 and lower shell body 22.
First center hole 31 is set on the top of upper shell 21, the first row vent hole 32 communicated is set in the bottom of upper shell 21, and locating column 33 is set in the bottom of upper shell 21 with the first center hole 31.
Second center hole 41 is set in the bottom of lower shell body 22, the second row vent hole 42 that to communicate is set on the top of lower shell body 22, and the positioning hole 43 matched with locating column 33 is set on the top of lower shell body 22 with the second center hole 41.
Sealing valve block 23 is arranged in cavity 25, and arranges central through bore on sealing valve block 23.Central through bore is enclosed within locating column 33, and with locating column 33 Spielpassung.
When fuel-steam is through the first center hole 31 and first row vent hole 32, fuel-steam has certain pressure, fuel-steam makes sealing valve block 23 contact with the bottom of lower shell body 22, sealing valve block 23 can not be closed or close second row vent hole 42 completely, and fuel-steam is discharged by second row vent hole 42 and the second center hole 41.
When fuel-steam is through the second center hole 41 and second row vent hole 42, fuel-steam has certain pressure, and fuel-steam makes sealing valve block 23 contact with the bottom of upper shell 21, and sealing valve block 23 closes first row vent hole 32.Now, fuel-steam can not standby conveying.
Fuel steam check valve of the present invention is connected directly between on motor, and for connecting canister etc., can meet guiding and traffic requirement, ensures oppositely sealing simultaneously.
" first ", " second " in the present invention etc. only for describing conveniently, do not have the implication that other is special." top ", " bottom " etc., for describing conveniently, are the direction of accompanying drawing.
According to one embodiment of present invention, groove 45 is set at the excircle of lower shell body 22.Seal ring 24 is arranged in groove 45.
According to one embodiment of present invention, 5 first row vent holes 32 are set in the bottom of upper shell 21, and 5 first row vent holes 32 all communicate with the first center hole 31.The quantity, shape etc. of first row vent hole can design according to actual conditions.
According to one embodiment of present invention, further, 3 second row vent holes 42 are set on the top of lower shell body 22, and 3 second row vent holes 42 all communicate with the second center hole 41.The quantity, shape etc. of second row vent hole can design according to actual conditions.
According to one embodiment of present invention, the material of upper shell 21 and lower shell body 22 is all plastics, also can be the materials such as stainless steel.
According to one embodiment of present invention, the mode that the bottom of upper shell 21 is fixedly connected with the top of lower shell body 22 comprises: ultra-sonic welded.Ultra-sonic welded, also referred to as ultrasonic welding, refers to that thermoplastic is under ultrasonic vibration effect, makes two pieces of plastically weldings welding method together due to frictional heat between surface molecular.
The bottom of upper shell 21 and the top of lower shell body 22 also can adopt the mode such as to be threaded, buckle is connected to be fixedly connected with.
According to one embodiment of present invention, upper and lower half shell is when carrying out ultrasonic welding, and its structure is that the round boss 34 that upper shell is arranged coordinates with the wedge-shaped impression 44 that lower shell body is arranged, and welds in the contacting point of round boss 34 with wedge-shaped impression 44.
The one-way function of fuel steam check valve, realizes by sealing valve block and upper and lower half shell and locating column.Lower half shell has supporting surface and stiffening rib.The sealing surface of upper half shell has sealing loop wire, sealing surface is recessed conical camber, and the center bottom upper half shell is the guide pillar of sealing valve block.
The top design of lower half shell has location cylinder 43, and cylinder 43 is connected with four stiffening ribs of inner bore perimeter, and stiffening rib and horizontal plane exist 15 ° of certain angles.
According to one embodiment of present invention, the material of sealing valve block 23 and seal ring 24 is all fluorine silica gel, or other rubber material.
According to one embodiment of present invention, outside thread is set at the excircle of lower shell body 22 bottom, may be used for the scyewed joint with motor.Fuel steam check valve upper half shell is designed to male connector, can realize with soon insert negative joint connect fast.
According to one embodiment of present invention, when the excircle of lower shell body 22 bottom arranges the scyewed joint of outside thread and motor, seal ring 24 matches with motor fitting surface, can ensure the sealing requirements that valve body connects with motor.
According to one embodiment of present invention, seal valve block 23 coordinate with upper and lower half shell fitting surface realize one-way valve open closing function.By ultrasonic welding between upper and lower half shell, ensure the sealing in valve body.
Whole fuel steam check valve entire body uses plastic material, and such as, the material of upper and lower half shell is PA66.The flame resistance of the material of all parts and mechanicalness are all very good, can ensure that fuel steam check valve normally uses between 150 DEG C at-40 DEG C.
The top of the upper half shell of fuel steam check valve of the present invention is male connector, can realize connecting with fast slotting the quick of negative joint, ensures sealing simultaneously, and is convenient to quick-detachment, the inconvenience that the joint structure solving valve in the past connects with pipeline and sealing problem.
Be under the condition of fuel-steam at interior media, the vacuum seal valve block open and close that utilizes of fuel steam check valve of the present invention realizes the water conservancy diversion of fuel-steam and oppositely ends control, and valve lower end design worm structure is connected with motor, before directly solving, control valve is oppositely stoping the problem of fuel-steam sealing difference.
Fuel steam check valve of the present invention prevents the backflow of fuel-steam, the other end of valve can realize connecting fast and dismounting simultaneously, there is provided the operability of mounting process, the Economy that can improve fuel oil avoids more multiple fuel discharge of steam to air, to play the effect of environmental protection simultaneously.
Description of the invention provides in order to example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (6)
1. a fuel steam check valve, is characterized in that, comprising:
Upper shell (21), lower shell body (22) and sealing valve block (23);
The bottom of described upper shell (21) is fixedly connected with the top of described lower shell body (22), and forms cavity (25) between described upper shell (21) and described lower shell body (22);
On the top of described upper shell (21), the first center hole (31) is set, the first row vent hole (32) communicated with described first center hole (31) is set in the bottom of described upper shell (21), and locating column (33) is set in the bottom of described upper shell (21);
In the bottom of described lower shell body (22), the second center hole (41) is set, the second row vent hole (42) communicated with described second center hole (41) is set on the top of described lower shell body (22), and the positioning hole (43) matched with described locating column (33) is set on the top of described lower shell body (22); Described sealing valve block (23) is arranged in described cavity (25), and arranges central through bore on described sealing valve block (23); Described central through bore is enclosed within described locating column (33), and with described locating column (33) Spielpassung;
Wherein, when fuel-steam enters described first center hole (31) and passes through described first row vent hole (32), fuel-steam makes described sealing valve block (23) contact with the bottom of described lower shell body (22), and fuel-steam is discharged by described second row vent hole (42) and described second center hole (41); When fuel-steam enters described second center hole (41) and passes through described second row vent hole (42), fuel-steam makes described sealing valve block (23) contact with the bottom of described upper shell (21), further, described sealing valve block (23) closes described first row vent hole (32);
Also comprise seal ring (24); At the excircle of described lower shell body (22), groove (45) is set; Described seal ring (24) is arranged in described groove (45); The mode that the bottom of described upper shell (21) is fixedly connected with the top of described lower shell body (22) comprises: ultra-sonic welded; Wherein, the wedge-shaped impression (44) that the round boss (34) that upper shell is arranged is arranged with lower shell body coordinates, and welds in the contacting point of round boss (34) with wedge-shaped impression (44).
2. fuel steam check valve as claimed in claim 1, is characterized in that:
5 first row vent holes (32) are set in the bottom of described upper shell (21), and described 5 first row vent holes (32) all communicate with described first center hole (31).
3. fuel steam check valve as claimed in claim 2, is characterized in that:
3 second row vent holes (42) are set on the top of described lower shell body (22), and described 3 second row vent holes (42) all communicate with described second center hole (41).
4. the fuel steam check valve as described in claims 1 to 3 any one, is characterized in that:
The material of described upper shell (21) and described lower shell body (22) is all plastics.
5. the fuel steam check valve as described in claims 1 to 3 any one, is characterized in that:
The material of described sealing valve block (23) and described seal ring (24) is all fluorine silica gel.
6. the fuel steam check valve as described in claims 1 to 3 any one, is characterized in that:
At the excircle of described lower shell body (22) bottom, outside thread is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310145697.7A CN103195616B (en) | 2013-04-24 | 2013-04-24 | A kind of fuel steam check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310145697.7A CN103195616B (en) | 2013-04-24 | 2013-04-24 | A kind of fuel steam check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103195616A CN103195616A (en) | 2013-07-10 |
| CN103195616B true CN103195616B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310145697.7A Active CN103195616B (en) | 2013-04-24 | 2013-04-24 | A kind of fuel steam check valve |
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| Country | Link |
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| CN (1) | CN103195616B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020439B (en) * | 2014-04-25 | 2017-12-08 | 上海亚大汽车塑料制品有限公司 | Check valve |
| CN105508085B (en) * | 2016-01-19 | 2018-02-09 | 河北亚大汽车塑料制品有限公司 | Fuel-steam venturi valve and fuel steam discharge control system |
| CN105464845A (en) * | 2016-01-19 | 2016-04-06 | 河北亚大汽车塑料制品有限公司 | Fuel steam venturi connector and fuel steam discharging control system |
| CN108999674B (en) * | 2018-10-08 | 2023-09-15 | 河北亚大汽车塑料制品有限公司 | Integrated one-way PCV valve |
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| EP1703183A1 (en) * | 2005-03-18 | 2006-09-20 | Carl Freudenberg KG | Check valve |
| CN101881351A (en) * | 2010-07-14 | 2010-11-10 | 厦门松霖科技有限公司 | Non-return device for flow regulation |
| CN101881225A (en) * | 2010-06-17 | 2010-11-10 | 重庆长安汽车股份有限公司 | Check valve for engine |
| CN201771632U (en) * | 2010-04-06 | 2011-03-23 | 浙江吉利汽车研究院有限公司 | Three-way valve of activated carbon tank of automobile |
| CN202561159U (en) * | 2012-05-10 | 2012-11-28 | 杨大玮 | Elastic soft seal adjusting valve |
| CN203335286U (en) * | 2013-04-24 | 2013-12-11 | 河北亚大汽车塑料制品有限公司 | Fuel oil steam one-way valve |
-
2013
- 2013-04-24 CN CN201310145697.7A patent/CN103195616B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1703183A1 (en) * | 2005-03-18 | 2006-09-20 | Carl Freudenberg KG | Check valve |
| CN201771632U (en) * | 2010-04-06 | 2011-03-23 | 浙江吉利汽车研究院有限公司 | Three-way valve of activated carbon tank of automobile |
| CN101881225A (en) * | 2010-06-17 | 2010-11-10 | 重庆长安汽车股份有限公司 | Check valve for engine |
| CN101881351A (en) * | 2010-07-14 | 2010-11-10 | 厦门松霖科技有限公司 | Non-return device for flow regulation |
| CN202561159U (en) * | 2012-05-10 | 2012-11-28 | 杨大玮 | Elastic soft seal adjusting valve |
| CN203335286U (en) * | 2013-04-24 | 2013-12-11 | 河北亚大汽车塑料制品有限公司 | Fuel oil steam one-way valve |
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| CN103195616A (en) | 2013-07-10 |
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